a matter of life and death
US /ə ˈmætər əv laɪf ənd dɛθ/
UK /ə ˈmætər əv laɪf ənd dɛθ/

1.
生死攸關, 性命交關
a situation that is extremely important and serious, often involving danger or survival
:
•
Getting this medicine to the patient is a matter of life and death.
把這種藥送到病人手中是生死攸關的事情。
•
For the trapped miners, every minute was a matter of life and death.
對於被困礦工來說,每一分鐘都是生死攸關的。